Casio G-Shock GULFMASTER Atomic GWN-1000B-1AJF Men's WatchThe GULFMASTER is tailor made for serious deep-sea adventures and has created a considerable wave in the maritime sports community. Consider the GULFMASTER as a G-SHOCK on steroids; it is the first G-Shock model to use Triple Sensor Version 3 and Smart Access at the same time. Stay in touch with the weather while riding the waves, the Gulfmaster assures you’ll steer clear off any sudden and extreme changes without any substantial risk.